Chemical polishing is an important method of polishing the surface of aluminum profiles. Chemical polishing is a method of eliminating wear marks and etching and leveling by the selective dissolution of chemical reagents on the uneven area of the sample surface. What are the main factors that affect the chemical polishing effect of aluminum profiles?
The purity of aluminum profile aluminum is too low. When the purity of aluminum in the aluminum profile is too low, it is not suitable for chemical polishing, and it is changed to nickel plating or chrome plating under possible conditions. There is dirt on the surface of the aluminum profile. Before the aluminum-aluminum profile enters the chemical polishing solution, it needs to be fully pretreated until there is no more dirt on the surface of the aluminum profile. The phosphoric acid content in the polishing solution may be too low. After adding an appropriate amount, try throwing again. If there is still no improvement at this time and no other conditions affect, you can add a small amount of nitric acid or sulfuric acid and try throwing again. It can usually be adjusted.
The temperature of the polishing solution is too low. Although the temperature range of the polishing solution is wide, the temperature has a very obvious effect on the composition of the solution. For example, the newly prepared solution can obtain the ideal polishing quality at the lower limit of the process temperature. This is because each component is in the process specification. and the viscosity is relatively small; when the solution is used for a certain period of time, due to the change in the distribution ratio of the relevant components in the solution and the increase in the viscosity of the solution, it is often necessary to use the temperature at the upper limit of the process specification, and sometimes even if the temperature reaches the upper limit, the polishing cannot be satisfied. Require. For this reason, the temperature of the solution during polishing should be temporarily adjusted according to the actual situation of the thrown aluminum profile.
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